Mag’s modular HMC 1250/1600 high-precision, high-productivity series is engineered for machining large aerospace, power-generation, pump, valve and off-road equipment parts.
The machine’s six spindle options make it well-suited for special-purpose and general-machining requirements, the company says. The latest spindle is a 6,000- and 8,000-rpm/46-kW (61.6-hp) tilt-spindle with +90/-120 degree A-axis travel. Other spindle options include an all-around 10,000-rpm/56-kW (75-hp) spindle; a high-speed, 24,000-rpm spindle; a high-torque 2,600-Nm/80-kW (1,918 foot-pounds) spindle; and two live spindles (110- or 130-mm diameter). The high-torque spindle is especially suited for hard metalcutting, while the live spindles extend W-axis reach by as much as 800 mm (31.5"), enabling deep-cavity milling as well as increased precision with shorter, more-rigid tool lengths. The company’s Z-axis thermal compensation software dynamically offsets spindle growth to maintain tight tolerances.
The HMC is designed for extreme application flexibility with a maximum 3,000-mm (118") work-zone swing, 2,500-mm (98.4") work-height capacity and 15,000-kg (33,000 lbs) pallet-load capacity. Major machine components, including the X-bed, Z-bed and column, are cast ductile iron. A modular design provides a range of machine travels, 60- to 300-tool magazines and two control choices.
The HMC offers 56 to 80 kW (75 to 107 hp) spindle power, 35 kN (7,870 lbs) Z-axis thrust, and a rigid, full-contouring hydrostatic rotary table. The 360,000-position contouring table provides a rigid work platform, while a rugged worm-gear drive with clamp securely holds axis position, the company says. Rotary table positioning accuracy is 10 arcseconds, repeatable to 5 arcseconds. Positioning accuracy of the tilt-spindle is 4 arcseconds, repeatable to 2 arcseconds.
For tighter part tolerances and greater machining accuracies, the HMC series is equipped with linear scale feedback in the X, Y and Z axes, providing 8 microns (0.0003") positioning accuracy and 5 microns (0.0002") repeatability. Hardened and ground roller guideways enable a rapid-traverse rate ranging to 40 m/min (1,575 ipm).
With so many choices in five-axis machining technology, how do you know which is best for your shop? First, consider the parts. Then, look at existing processes and potential five-axis benefits.
You know how to machine metals, but what about plastic machining? More specifically, glass-fiber-reinforced plastic? This machine shop has it figured out.
Years of trial and error combined with the appropriate machining technology allow this company to produce custom parts made of alumina, zirconia, boron nitride and other advanced ceramic materials. One example of key machining technology is a five-axis machining center used exclusively to produce the complex, tightly toleranced geometry that fire-hardened workpieces require.